[azcrf150]

i have heard that when a dirt bike is sold from the factory it is set a little lean. on the carb were do i level the fuel and air mixture at. my plug is a litte white and what to even things out. the bike is all stock. i would love to see pictures.

[sixmohabit]

If the bike is lean (which I guarentee it is) you need to change the jetting. I'd love to help you out but I'm no expert...If you were rejetting a 450X I could help to steer you in the right direction but I know nothing of the 150f.